The population density of India from 1901 to 2011 is shown in Statement 31. At the beginning of the twentieth century i.e. in 1901 the density of India was as low as 77 persons per sq. km.This steadily increased in each decade to reach 382 persons per sq. km. in 2011.he population density of India from 1901 to 2011 is shown in Statement 31. At the beginning of the twentieth century i.e. in 1901 the density of India was as low as 77 persons per sq. km.
How they can cause insomnia: Alpha-blockers are linked to decreased REM (rapid eye movement) sleep â the stage of sleep when people dream â and daytime sedation or sleepiness. The proportion of REM sleep drops markedly in old age, and people deprived of REM sleep can experience memory problems.
Unhealthy lifestyles and sleep habits can create insomnia on their own (without any underlying psychiatric or medical problem), or they can make insomnia caused by another problem worse. Examples of how specific lifestyles and sleep habits can lead to insomnia are: 1  You work at home in the evenings. 2  You take naps (even if they are short) in the afternoon. 3  You sometimes sleep in later to make up for lost sleep.  You are a shift worker (meaning that you work irregular hours).